Kaley Cuoco, 37, first announced her daughter's birth via Instagram in April, sharing photos of the sweet family of three.
“Introducing, Matilda Carmine Richie Pelphrey, the new light of our lives!” she captioned the post.
“We are overjoyed and grateful for this little miracle Thank you to the doctors, nurses, family and friends who have helped us immensely over the last few days. We are blessed beyond belief.”
“@tommypelphrey didn’t think I could fall even more in love with you, but I did.”
The Big Bang Theory actress first announced she was pregnant in October last year, five months after the couple went public with their relationship.
“Baby girl Pelphrey coming 2023," she captioned a set of pictures, surprising fans. “Beyond blessed and over the moon,” she continued. “I [love] you @tommypelphrey !!!”
In an interview with Extra last year, The Flight Attendant star revealed how she met Tom, who is also an actor.
Explaining that they both have "the same management team," she added, “My manager actually took me as her guest to the ‘Ozark’ premiere, and I met him there. It was like the angels started singing. I was like, ‘Hallelujah.’ It was very magical. … It was perfect.”
Previously, Kaley was married to Ryan Sweeting and Karl Cook, explaining to Extra that she met her current partner after she underwent "a lot of therapy and self-reflection."